1、Level Monitor: With a wide measuring range from 0 to 15 meters, the level meter can record the maximum and minimum liquid level. 2、High Accuracy: A high accuracy up to 0.03 meter with data updated every 30 seconds or 3 minutes ensures easier tank monitoring. 3、Long Distance: In open area, the transmission distance can get to 100 meters, which allows for observation from a long distance. 4、Alarm Function: Supporting alarming function when the water tank level is too high, too low or empty, so the operation is safer. 5、Convenient Use: The tank water level sensor is also equipped with thermometer, timer, etc., adding more convenience to working. Item Type: Water Tank Level Meter Product Material: ABS Data: The fuel tank level is updated every 30 seconds or 3 minutes. Indoor Temperature Range: 0~50℃ Outdoor Temperature Range: -40~60℃ Temperature Accuracy: ±1℃ Water Level Measurement Range: Approx. 0 ~ 15meter / 0 ~ 49.2ft Resolution: Approx. 0.01meter Accuracy: Approx. ±0.03meter Transmission Frequency: 433MHz Transmission Range: Approx. 100meter / 328.1ft (open area) Applicable Liquid Type: For all non corrosive liquids. Batteries: Shipped without batteries, use 6 x 1.5V AAA batteries and 2 x 1.5V AA batteries. 1 x Main Machine 1 x Water Tank Level Meter 1 x User Manual